Degradation and sludge production of textile dyes by Fenton and photo-Fenton processes

The degradation and decolorization of direct dye (Everdirect supra turquoise blue FBL), acidic dye (Isolan orange S-RL) and vat dye (Indanthrene red FBB) have been investigated by Fenton and UV/Fenton processes. The effects of solution pH, Fe 2+ dosages and H 2O 2 dosages have been studied by jar-te...

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Bibliographic Details
Published inDyes and pigments Vol. 73; no. 1; pp. 1 - 6
Main Authors Liu, Robert, Chiu, H.M., Shiau, Chih-Shiuc, Yeh, Ruth Yu-Li, Hung, Yung-Tse
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 2007
Subjects
AOP (Advanced oxidation process)
Fenton process
Free radicals
Photo-Fenton process
Photo-Fenton process
Free radicals
AOP (Advanced oxidation process)
Fenton process
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Summary:The degradation and decolorization of direct dye (Everdirect supra turquoise blue FBL), acidic dye (Isolan orange S-RL) and vat dye (Indanthrene red FBB) have been investigated by Fenton and UV/Fenton processes. The effects of solution pH, Fe 2+ dosages and H 2O 2 dosages have been studied by jar-test experiments. A comparative study for Fenton and UV/Fenton reactions by photoreactor has also been carried out by scale-up the optimum conditions, obtained through jar-test experiments. Fenton process is highly efficient for color removal for three dyes tested and for TOC removal of FBB and FBL. UV/Fenton showed slighter increase in treatment efficiency than that of Fenton process for both FBB and FBL dye solutions. S-RL improved much more TOC removal% by UV-irradiation. Sludge productions were compared for FeCl 3-, FeSO 4-coagulation and Fenton reaction in order to prove the dual role of FeSO 4 in Fenton process.
ISSN:0143-7208
1873-3743
DOI:10.1016/j.dyepig.2005.10.002